Jaw surgery (orthognathic surgery) is a common method for correcting jaw irregularities and improving chewing, speech, and facial appearance. However, relapse — the jaw shifting back after surgery — is one of the major challenges that can negatively affect treatment outcomes. This article examines the factors that influence relapse, including correct positioning of the proximal mandibular segment, release of the jaw muscles, and an appropriate treatment plan, and also looks at the role Dr. Alireza Sadighi, an oral, jaw, and facial surgery specialist, plays in improving surgical outcomes and reducing the risk of relapse.
Positioning the proximal mandibular segment
In lower jaw surgery, precise positioning of the proximal segment — the part of the jawbone connected to important muscles such as the masseter and pterygoid — is of great importance. Incorrect positioning of the proximal mandibular segment can cause an imbalance of forces and problems in the temporomandibular joint (TMJ), which can ultimately lead to the jaw shifting back to its original position, or relapse.
Challenges in positioning the proximal segment
1. Incorrect rotation of the proximal segment: if the proximal segment is not properly placed in its new position, the jaw muscles and the forces applied to the jaw joints are not distributed correctly, which ultimately leads to relapse.
2. Mismatch between the distal and proximal segments: alignment between the distal and proximal segments is essential for achieving stability after jaw surgery. A mismatch causes excessive pressure on the joints and increases the likelihood of relapse.
3. Use of incorrect fixation techniques: insufficient or incorrect fixation of the proximal mandibular segment can cause it to shift after surgery, which is one of the main causes of relapse.
Jaw muscle release and its importance
During orthognathic surgery, the jaw muscles — including the masseter and pterygoid — must be properly released to help reposition the bone segments and prevent their resistive force. Releasing the jaw muscles helps the surgeon make the necessary changes as intended, without excess pressure, and helps prevent the jaw from shifting back after surgery.
Considerations in jaw muscle release
1. Controlled release of the masseter and pterygoid muscles: if these muscles are not properly released, they can put pressure on the jaw's previous position and cause relapse. Controlled release reduces the pressure on the jaw.
2. Maintaining balance in muscle release: excessive release of the muscles can affect jaw stability and cause instability. Balance in muscle release is therefore very important.
Treatment planning and relapse prevention
1. Careful pre-surgical analysis and planning: using 3D imaging and digital modeling helps the surgeon precisely assess muscle forces and the position of the jaw segments, and develop the best treatment plan.
2. Use of appropriate fixation devices: after surgery, using suitable plates and screws to fix the bone segments in place is essential. These devices help prevent unwanted movement of the segments and help prevent relapse.
3. Use of orthodontic devices after surgery: orthodontic devices play a vital role in maintaining the jaw's new position and can help prevent relapse.
Dr. Alireza Sadighi's role in jaw surgery and relapse prevention
Dr. Alireza Sadighi, one of the leading specialists in oral, jaw, and facial surgery, has, through his experience and specialized knowledge, achieved improved jaw surgery outcomes and reduced relapse risk in his patients. His approach — precise positioning of the proximal segment and appropriate release of the jaw muscles, combined with the use of modern technologies such as 3D imaging — has increased treatment success and reduced the likelihood of relapse.
Conclusion
Correct positioning of the proximal mandibular segment and appropriate release of the jaw muscles are among the key factors in reducing the risk of relapse after jaw surgery. Dr. Alireza Sadighi, relying on modern surgical techniques and advanced analysis, has successfully helped improve his patients' treatment outcomes. Careful pre-surgical planning and the use of appropriate fixation methods play a vital role in preventing relapse and ensuring stable results.